Sectional steam-boiler



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H; M. NORTON.

SEGTIONAL STEAM BOILER.-

No. 524,183. Patented Aug. 7, 1894.

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H. M. NORTON. SBUTIONAL STEAM BOILER.

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UNITE STATES PATENT OFFICE.

HORACE M. NORTON, OF EASTON, PENNSYLVANIA.

SECTIONAL STEAM-BOILER.

SPECIFICATION formingpart of Letters Patent 1vo.524,1s3, dated August 7, 1894.

Application filed April 19, 1894:.

To all whom it may concern Be it known that I, HORACE M. NORTON, a

citizen of the United States, and a resident of Eas'ton, in the county of Northampton and State of Pennsylvania, have invented certain new anduseful Improvements in Sectional Steam-Boilers; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification, and in which Figure-1 is a perspective view of my improved sectional boiler; the outside asbestuscovering or jacketing having been removed. Fig. 2 is a longitudinal sectional view of the same, on a vertical plane through the middle thereof. Fig. 3 is a transverse sectional view on the plane denoted by the broken line marked w-a: in Fig. 2. Fig.4 is a. similar view, on

the parallel transverse plane denoted by the broken line marked y-y. Fig. 5is a detail view of the damper attachment, or draft-regulating device. Fig. 6 is a perspective view of the front section of my improved sectional boiler. Fig. 7 is a perspective view of the rearmost section of the boiler. Fig. 8 is a perspective view of one of the intermediate body-sections-of myimproved sectional boiler or steam-generator; andFig. 9 is a sectional view (lookingdownward) on the horizontal plane denoted by the broken line marked 2-2 in Figs. 2 and 3.

Like letters of reference designate corresponding parts in all the figures.

This invention relates to sectional steamboilers, or safety-boilers, of that type which are intended, more particularly, for hot-water and steam-heating systems adapted for dwellings, schools, churches, factories, and buildings of all kinds; and myimprovements consist in the novel construction and combination of parts of a boiler or steam-generator of that class as will be hereinafter more fully set forth, whereby I; not only materially increase the capacity and efficiency of the boiler, but also increase the durability of the same and avoid the liability to leakage, besides economizing both space and fuel; all most important desiderata, and effected by my improvements without increasing the cost Serial no.'50s,14o. (No model.)

of the boiler over the cost of other boilers of the same capacity. 4

On the accompanying three sheets of drawings, I have shown a boiler made up of only four hollow sections, via, a front and rear section, and two intermediateor body sections; but it will be obvious that the number of the intermediate sections (all of which are hollow and constructed alike) may be increased at will, according to the capacity which the boiler is to have in a given case. The construction of these intermediate body sections being, as stated, exactly alike, the description of one will apply to them all.

As will appear by reference to the drawings, each intermediate hollow section, B, is provided with an exterior packing-flange b, and bottom recesses c a, one on each side, leaving projecting bosses G O, bymeans of which, in conj unction with the tubular nipples D D, the several sections are connected to one another on both sides. 0, on the top of each section, forms, in conjunction with the tnbnlar nipples D D, the top-connection between the several sections. Butas these features form the subject-matter of another application: of even date herewith, to wit: my application Serial No. 508,139, f urther description of these improvemen ts is not deemed essential to my present application.

The lower part of each hollow section B is cast with an open-bottomed recess E at its lower end, which, when the several sectiorfs are assembled and united, forms a continuous fire-box, as usual in this type of boilers; but with this difference, that the top and sides of these recesses E E in the body-sectionsB B are beveled on the top and sides, as shown at e and e 6, respectively, so that, when the sections are properly juxtaposed, triangular subrecesses, fand f, will be formed in the roof and sides of the fire-box F between the several sections, whereby the heating-area of this is considerably increased. Above the beveled fire-box recesses E, each hollow section B is provided with a series of transverse fines G G, arranged in'parallel rows and extending from above the fire-box recess to the top of the section, below its head 0'.

The hollow frontsection A, which corresponds in size and configuration to the bodysections B B and rear section I, has the usual A projection or head opening a, forming an entrance to the firebox F,'and closed by a door, a, in the front Wall A of the boiler. But instead of the fines G arranged in several parallel rows, one above the other, this section is cast with only the top row of fines, G, registering or coinciding with the uppermost row G of the body-sections B and rear section I; the fines G G of the adjacent section B opening up into vertical oblong openings H H, which coincide with the contiguous vertical rows of fines G G of the adjacent section B; each vertical row of fines G G opening up into its appropriate coinciding oblong opening H, which thus, it will be observed, forms a connection between all the fines G G (leaving out the topmost return-fines G, which are arranged to break joints with the vertical rows of fines below) of its appropriate vertical row or series.

The rearmost section, or back-section, I, differs both from the front section A and intermediate or body-sections B in several important particulars, although'it is of the same general size and outline, and is, like these, provided withside-recesses c c,side-bosses or projections O O, and a top-projection or head 0, whereby, by means of the sidenipples D D and top nipples D, it is connected to the sections in front of it. This back-section I, which is cast hollow like the rest and provided with a packing-flange b, has two rows of fines, G, G, one of which registers with the top rowof return fines G in the other sections, While the one next below registers with the second row of fiues G, from the top, in said several sections, as will appear more clearly by reference to Fig. 2 on the drawings, in which the arrows represent the course of the products of combustion through the fines and their connections when the damper or draft-regulator K is closed. In said Fig. 2, the damper K is shown as open, thus permitting the flame and smoke from the fire-box F to enter the sheet-fine m and pass up into the smoke-box N through the vertical fines 2', without passing through the series of hori' zontalfiues and return-fines G, G. Below the second row of fines G, section I is cast with a series of parallel depending partitions, J J, the upper rounded ends jj of which coincide with the third horizontal row of fines (counting from the top) of the adjacent sections, and are provided with horizontal side-flanges or ledges, la 70, forming bearings for the sliding damper, ordraft-regulator K, to be hereinafter described. The lower ends of the depending partitions terminate just below the lowermost row of fines in the adjacent body-section, in horizontal alignment with the roof 7 of the fire-box F, and immediately above the slope or incline M, above the sheet-fine m and back-Wall L.

By reference to Fig. 2, it will be seen that the fire, smoke, and other products of combustion, striking the incline M, are deflected up through the sheet-fine m into the vertical fines i t formed between the depending partitions J J, from which they pass through the. open topsjj into the smoke-box N and up into the chimney or smoke-stack, provided that the damper is left open so as to provlde for a direct draft, as indicated in full-line in Fig. 2. To close the damper K and shut off the direct draft, the projecting damper handle n is pushed inwardly, which slides the damper fingers or plates K K forwardly above the sheet-fine so as to close direct communication between this and the smoke-box; the damper-fingers K K sliding upon the side-ledges 76 75. By closing this damper, as indicated in dotted lines in Fig. 5, the fire and gases are compelled to pass from the fire-box F and sheet-fine m up through the vertical fines i 2', and forwardly through the lowermost row of fines G G into the vertical fineopenings or connections 1-] H in the front section A; and then up to the uppermost rows of fines G G and top-row G; said top-row of fiues, G, being supplied with heat and gases through the, space formed by the cleaning-out doors, shown at g, which are set back sufficiently to permit the gases to enter this topmost row of fiues from the front. Through the three uppermost rows of fines, G, G G, the products of combustion then finally, having given off all or the greater part of thelr available heat, pass to the smoke-box N and from it up into the chimney or smoke-stack.

The back-section I is cast with a projecting chamber 1, which forms ahollow water-back back of the sheet-fiuejm and above the same; the inner wall L of said water-back being set back to make room for the row of parallel vertical fiues 41 t, which impinge upon sa d back-wall; the projecting back-wall of said chamber 1' being cast sloping toconform to the inside slope or incline Mof the sheet-flue m, as shown at M. The closed top of the water-back I is in horizontal alignment with the under side of the third row of fines from the top, and forms a rearwardly-projecting ledge, n, which forms a rest or support for the smoke-box N. This hollow water-back not only forms a support for the smoke-box; but, being always filled with water when the boiler is in use, it prevents the heat and fire, as it strikes the inclined back-wall M and is deflected up through the sheet-fiuem into the vertical fines 11 'i, from burning out, Warping or cracking the flame-sheet or crown-sheet L back of the vertical fines; besides which the projection 1 adds rigidity and strength to the back-section as a whole.

Of course, it will be understood that all the sections are cast hollow, and have a waterspace not only surrounding the flues in the upper part of each section, but also immediately above the fire-box and on both sides of the same; in fact, every place where the fire and heat strike is backed by a body of water. in front of the vertical fines or fine-connections H H and top-row of fines G in the front section, access may readily be had to all the By opening the cleaning-out doors g,

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fiues for cleaning; and by constructing the back-section I with a large open sheet-flue and open-bottomed vertical flues it, these can also readily be reached and cleaned through the open fire-door from the front, by raking the'soot down upon the incline M and into the rear end of the fire-box.

By constructing the sections with beveled recesses E E, to form the triangular sub-recesses f and f within the fire-box F, the heating-area of this is, as already stated, considerably increased without proportionately increasing the size of the boiler; besides which the beveled edges of the section-recesses E E facilitate the casting of the sections and make a stronger and better finish.

Having thus described my invention, I

claim and desire to secure by Letters Patent of the United States 1. In a sectional boiler or steam generator,

the hollow back-section I cast with aseries of parallel depending partitions :T J; a sheetflue m having an inclined back wall M; and

a rearwardly-projecting water-back I having a sloping bottom M coinciding with the innerback-wall M substantially as and for the purpose shown and set forth. 

